Which of the following lead to pregnancy and development of embryo.
(i) Fertilization of egg
(ii) Maturation of egg
(iii) Release of egg
(iv) Embedding of embryo in thickened uterine wall.
Which of the following options gives the correct order of sequence in which they occur?

(i), (ii), (iii), (iv)

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(ii), (i), (iii), (iv)

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(i), (iv), (ii), (iii)

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None of the above

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Solution

The correct option is D None of the above
After ovulation only matured eggs can be fertilized in reproduction. After fertilization at blastocyst stage implantation occurs in uterine wall and development of embryo takes place. Thus, the correct answer is option D.

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Question 3
Given below are events that lead to pregnancy and development of embryo

(i) Fertilization of egg
(ii) Maturation of egg
(iii) Release of egg
(iv) Embedding of embryo in thickened uterine wall.

Which of the following options gives the correct order of sequence in which they occur?

(a) i, ii, iii, iv
(b) ii, i, iii, iv
(c) i, iv, ii, iii
(d) ii, iii, i, iv

Q. The key events in embryo development are given below which is the correct order of seequences
i) organogenesis ii) Fertilization iii) Gastrulation iv) Neurulation v) Cleavage

Column I	Column II
(a) FSH	(i) Prepare endometrium for implantation
(b) LH	(ii) Develop female secondary sexual characters
(c) Progesterone	(iii) Contraction of uterine wall
(d) Estrogen	(iv) Development of corpus luteum
	(v) Maturation of Graafian follicle

Match the hormone in column I with their function in column II and choose the correct combination from the following.

Find one word for the following statements and choose the correct option
(I) Residual, persistent nucellus in seed-A
(II) Microspores arranged in a cluster of four cells-B
(III) Special cellular thickening at the micropylar end of embryo sac-C
(IV) Development of seeds without fertilization-D

Question 16
Which of the following statements are true about flowers?

(i) Flowers are always bisexual
(ii) They are the sexual reproductive organs
(iii) They are produced in all groups of plants
(iv) After fertilization, they give rise to fruits

(a) (i) and (iv)
(b) (ii) and (iii)
(c) (i) and (iii)
(d) (ii) and (iv)

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Which of the following lead to pregnancy and development of embryo.(i) Fertilization of egg(ii) Maturation of egg(iii) Release of egg(iv) Embedding of embryo in thickened uterine wall.Which of the following options gives the correct order of sequence in which they occur?

The correct option is D None of the aboveAfter ovulation only matured eggs can be fertilized in reproduction. After fertilization at blastocyst stage implantation occurs in uterine wall and development of embryo takes place. Thus, the correct answer is option D.

Which of the following lead to pregnancy and development of embryo.
(i) Fertilization of egg
(ii) Maturation of egg
(iii) Release of egg
(iv) Embedding of embryo in thickened uterine wall.
Which of the following options gives the correct order of sequence in which they occur?

The correct option is D None of the above
After ovulation only matured eggs can be fertilized in reproduction. After fertilization at blastocyst stage implantation occurs in uterine wall and development of embryo takes place. Thus, the correct answer is option D.